2-acetamido-8,2'-anhydro-6-chloro-8-mercapto-9-(3',5'-O-diacetyl-β-D-arabinofuranosyl)purine

8,2'-anhydro-8-mercaptoguanosine

2',3',5'-三-O-乙酰基-2-氯腺苷

2,6-diamino-8-bromo-9-(2'-O-tosyl-β-D-ribufuranosyl)-purine

2'-脱氧尿苷